Martin Luther

Reason is a whore, the greatest enemy that faith has; it never comes to the aid of spiritual things, but more frequently than not struggles against the divine Word, treating with contempt all that emanates from God.

The fewer the words the better the prayer.

Those speak foolishly who ascribe their anger or their impatience to such as offend them or to tribulation. Tribulation does not make people impatient, but proves that they are impatient. So everyone may learn from tribulation how his heart is constituted.

I have so much to do that I shall spend the first three hours in prayer.

Tomorrow I plan to work work from early until late. In fact I have so much to do that I shall spend the first three hours in prayer.

Fight vigorously against the wolves, but on behalf of the sheep, not against the sheep. And this you may do by inveighing against the laws and lawgivers, and yet at the same time observing these laws with the weak, lest they be offended, until they shall themselves recognize the tyranny, and understand their own liberty.